TY JOUR TI A STUDY OF FISHES SPAWNING BIOTOPES: A METHODICAL APPROACH KW spawning biotope KW phytophilic fishes KW litophilic fishes KW psamophilic fishes KW pelagophilic fishes JO Fisheries AU Kozlov, V.I. AU Kozlov, A.V. PY 2020 IS 2020 PB FSBI "TSUREN"